Motor-vehicle.



No. 662,902. Patented Dec.'4, |9100.

'H. L. ARNOLD.

MOTOR VEHICLE.

(Application led Mar. 8, 1900.

(No Model.) 3 Sheets-Sheet l.

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H. L. ARNOLD.

MUTR VEHICLE.

(Application led. Mar. 8, 1900.)

3 Sheets -Shee 2.

(No Model.)

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N0. 662.902. Patented neck. 4, |900. H. L. ARNoLn.

moron VEHICLE.

(Application med Mar. s, 1900,

3 Shees--Sheet 3.

(No Model.)

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llltirrtn .dramas Parana* Ormea,

HORACE L. ARNOLD, OF NEW YORK, N. Y., ASSIGNOR TO JOHN A.- HILL, OF SAMEPLACE.

WlOTORmVEl-HCLE.

SPECIFICATION forming part of Letters Patent No. 662,902, dated December4, 190`O.

Application flied March S, 1900- Serial No. 7,765- (No model.)

To a/Z whom, t may concern,.-

Be it known that I, HORACE L'. ARNOLD, a citizen of the United States,residing in New York, (Brooklym) in the county of Kings and State of New-York, haveinvented certain new and useful Improvements inMotor-Vehicles, of which the following is a specification.

This invention relates to motor-vehicles, and has for one object theprovision of improved mechanism for operating such a vehicle andconstructed to start orstop the same, propel it forward at one speed oranother speed, or reverse the movement thereof, as desired, saidmechanism being adapted to be driven by any suitable kind of gas,electric, pneumatic, or steam motor and being at all times under the complete control of the operator, whereby any of the results above setforth may readily and conveniently be accomplished.

A further objectof the invention is the provision, in a vehicle of theclass described, of spiral gearing for driving the same.

A further object of the invention is the provision of a shaft having aseries of spiral gears cooperating with gears intermeshing therewith andconnected with the aXle of the Vehicle to drive the same at one speed oranother speed or to reverse the movement of said axle when required.

A further object oi' the invention is the provision, in connection withthe driving mechanism, of a series of clutches by means of which anydesired element of said mechanism may be brought into cooperativerelation with the gearing for operating the axle carryingr thetraction-wheels.

A further object of the invention is the provision of improved means foractuating these clutches independently of each other, the constructionbeing such that but one of said clutches can be opal-ated at a time.

A further object of the invention is the provision, in connection withimproved driving mechanism, of compensating gearing to permit therotation of the traction-wheels at different velocities withoutaffecting the normal speed of the vehicle.

In the accompanying drawings, Figure l is a plan View of a motor-vehiclewith my invention in place thereon, tho box of the vehicle beingindicated by dotted lines and the compensating gearing and one of themotorcylinders being shown in section. Fig. 2 is a side elevationshowing the shaft for driving the traction-wheels in section. Fig. 3 isa rear end elevation. Fig. 4: is a detail detached view corresponding toFig. 3 with one of the clutch-actuating sleeves, the shaft in wl" saidsleeve is mounted, and the gearing "lied by said shaft in section. Fig.5 is a partial section on dotted line m00, Fig. 1. Fig. b' is aperspective view illustrating a means for controlling theclutch-actuating devices, and Fig. 7 is a perspective view of one of theclutch operating fingers.

Like numerals designate similar parts throughout the several views.

Referring to the drawings, the numeral 7 designates in ageneral Way theframe of the vehicle, which may be of any desired construction, thatshown comprising tubular side bars 8, connected by tubular crossbraces9, sleeved on said side bars and having bearings 10 for the reception ofthe powertransmitting shaft 12, which may be operated in any desiredmanner and by any suitable motor.

y A convenient manner of applying power to shaft 12 would be to equipthe same with cranks adapted to be connected to the pistonrods ofsuitable motoncylinders 15, 15', 16, and 16', mounted on the frame; butalthough such a construction is shown it is to be distinctly understoodthat the invention is not limited thereto.

Disposed at intervals along shaft 12 is a series of spiral gears,(designated by the numerals 13, 14, 150, and 160, respectively.) Four ofthese gears are shown; but the invention is not limited to this number,for any number of gears for obtaining the desired variations in speedmay he employed, the necessary modifications being made in the mechanismcooperating with said gears. Of these gears that numbered 13 isillustrated as a worm or spiral gear, the teeth of which are ofrighthand pitch or inclination, and this gear has its thread so disposedthat it will drive the vehicle at its highest speed, as will behereinafter set forth. Gears 14, 150,

and 160, of shaft 12 arc intended for propel- IOO ling the vehiclethrough intermediate connections with the driving-axle thereof,hereinafter described, at slower speeds than the gear 13, said gear 150cooperating with the intermediate mechanism to drive said vehicle at itsslowest forward speed, said gear 160 cooperating with said mechanism todrive it at the usual forward speed determined upon in accordance withthe law upon such subjects, and said gear 14 operating to reverse thevehicle at a slow speed.

To operate the worm-shaft by hand when necessary, it is provided with awheel 122 at its rear end.

Mounted in bearings of the frame is asuitable train of mechanism(designated in a general way by 17) connected with the axle carrying thetraction- Wheels and comprising a series of spiral gears 18, 19, 20, and21, respectively, said spiral gears being clutched to their shafts whenit is desired to propel the vehicle at one speed or at another speed orto reverse the movement of said vehicle.

As illustrated, spiral gear 20 is loosely carried on a hub 20', which isfixed to shaft 22, journaled in bearings of the frame, (all other spiralgears or worms being mounted in the same manner,) and connected to leachof these gear-carrying hubs is a clutch of some suitable kind, thatillustrated being what is known as a divided or split-ring clutch,

the ring 23 of which is adapted when eX-v panded to lock the gear to itsdriving-hub and to cause it to operate the shaft to which said hub issecured.

As a convenient form of clutch-operating mechanism I have illustrated aseries of toggies 24 disposed in the chamber of' the gearhub and adaptedto be actuated by a cone 25, detachably secured to a rod 26, adjustablyconnected to the stem 27 of a sleeve 28, mounted for endwisereciprocation in the shaft 22, to which the gear-hub is secured. Aspiralspring 29 surrounds this stem 27 and by pressing against shoulders onthe sleeve 28 and shaft 22 tends to push said sleeve outward to carrythecone 25 away from the toggles 24, and thereby release the clutch.

Threaded into sleeve 28 is a plug 30, having a hardened conical nose30', which fits in the socket of a ball-bearing carried by eachclutch-actuating lever, as will be hereinafter described. Four of theseclutches are employed, (one for each shaft geared with thedriving-axle,) and as they are alike in construction and mode ofoperation the description of one will suffice for all. Anysuitable formof clutch may, however, be employed, theinvention not being limited tothat shown. Recurring to the gear 18, driven by the quicli-speed spiralgear or worm 13, the hub 18 of said gear is secured to shaft 40 and maybe clutched to the gear and unclutched therefrom by an expansible ring,as above set forth. This shaft 40 has splined thereon a comparativelylarge gear 41, (shown of the spur kind,) and when the spiral gear islocked to said shaft said wheel will drive a large spur-gear 42, the hubof which fits over the ends of a divided shaft or axle 43, mounted inbearings projecting from the frame and carrying at each end atraction-wheel 44.

Secured to the respective sections of shaft 43 are bevel gear-wheels 4546, respectively, and the gear 42 carries a smaller bevel-pinion 47 inmesh with said wheels, this arrangement constituting compensatinggearing for permitting one of the sections of shaft 43 to travel fasterthan the other-for instance, when the traction wheels are roundingcurves-without affecting the speed at which the vehicle is being driven.

Worm or spiral gear 160 for driving the vehicle at the usual moderateforward speed is in mesh with gear 20, above described, carried by shaft22, journaled in bearingsin the upper part of the frame, and thisshaft-is driven by the clutch iustrumentalities illustrated in Fig. 4,and said shaft also carries a pinion 51 in mesh with the large gear 42on shaft 43, whereby when said gear 2O is clutched to its hub gear 42will be driven.

Vorm or spiral gear 150 for propelling the vehicle forward at itsslowestspeed is in mesh with worm-gear 19, the shaft 49 of said gear 19carrying a small pinion 5, intermeshed with gear 42, and worm or spiralgear 14, which is, as above stated, of reverse pitch from that of theother gears, is in mesh with gear 21 on a shaft 52, journaled inbearings on the under side of the frame, and said shaft carries a pinion53 in engagement with gear 42 and adapted when the clutch of shaft 52 isIOO manipulated to lock the worm-gear 21 there- A to to drive the shaft43 in a reverse direction and propel the vehicle backward at a slowspeed.

It will be understood that each of the shafts 22, 40, 49, and 52 isequipped with clutch-actuating devices like those shown in Fig. 4, andmeans will now be described for operating any of said clutch-actuatingdevices desired with no possibility of setting more than one clutch at atime.

Journaled in bearings preferably secured to one of the side bars 8 ofthe frame, although it may be otherwise mounted, is a shaft 54, havingattached at intervals thereto a series of fingers 55, 56, 57, and 58,respectively, and, as will be observed, (see Fig. 6,) each of thesefingers projects from said shaft in a different directionin theconstruction shown finger 55 projecting upward at an angle nearlyapproaching a right angle, finger 56 downward in one direction at anangle of about thirtylive degrees, finger 57 downward at about the sameangle as finger 56, but in the opposite direction thereto, and finger 58at right angles to said shaft. This arrangement may be variouslymodified without departure from my invention, and the fingers may be setat one angle or another angle, provided they accomplish the desiredresult.

Cooperating with the fingers 55, 56, 57, and

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58 and with the clutch mechanisms of the worin-carrying shafts areleversv59, 60, 61, and 62, each having a ball-bearing 59, 60', Gif, and62@ two of which levers, 59 and 60, are pivoted to the frame at 592 and602 and project downward, their lower ends being in posit-ion to beactuated by the fingers and 58 of the shaft 54, and two of which, 61 and62, are pivoted to the frame at 612 and 622, respectively, and projectin a vertical plane, so that their free ends may be engaged by thelingers 56 and 57 of said shaft 54, and here it may be stated that eachof the lingers 56 and 58 is composed of sections, one, 563 and 583,being secured to the shaft, and the other, 564 and 584, being connectedto the former in such a manner that it will yield in one'direction andbe inflexible in the other direction. In the construction illustratedthis result is secured by pivoting each section 56'l 584 to the othersection in such a manner that it may yield against the stress of aspring 565 585 when the shaft 54 is turned one way, and consequentlywill pass by without actuating the one of the levers 61 with whichV itcoperates, and will be held rigid to actuate its lever when the shaft 54is rocked in the opposite direction. Each lever 59, 60, 61, and 62 isequipped with a nose 593, 603, 613, and 623, which comes into contactwith a stop 63 and limits the movements of said lever.

Carried by shaft 54'is a pinion 64 in engagement with a rack 65, whichis actuated by a crank 66, carried by a shaft 67, pivoted in bracketsprojecting from one of the side bars 8 of the frame, and to this shaftis secured a hand-lever 68, carrying a retainingpin 69 for cooperatingwith a quadrant 70, secured to the frame and having a series of holes7l, 72, 73, 74, and 75 for the reception of pin 69, as will behereinafter described. (See Fig.

Mounted in bearings at the forward end of the frame is the usual axle80, to which the steering-wheels 8l may be secured in any well-knownway. As shown, the hubs 82 of said wheels are pivoted to the axle at 82in such a manner that the wheels may be turned to the angle desired, andeach hub has a crank 88, said cranks being connected by a rod 84, havinga rack 85 on its under side in engagement with a pinion 86, the shaft ofwhich carries a lever 87, equipped with a spring 88, having a projection89, adapted to be engaged with any one of a series of recessesin aquadrant 90, attached tothe frame.

lt will be observed that the worm-shaft 12 is located at right angles tothe traction-axle 43; that the quick-speed worm 153 is in engagementwith worm-wheel 18 of shaft 40; that the slowest forward-speed worm 150is intermeshed with worm-gear 19 of shaft 49; that the moderate-speedworm 16() coacts with lvt'orm-wheel 20 on shaft 22; that the reversingslow-speed worm 14 is in engagement with worm-wheel 21 on shaft 52; thateach of the shafts 22, 40, 49, and 58 carries a pinion in engagementwith the large gear 42 on the traction-axle, and that the shaft 12 isconstantly driven by the motor, thereby causing all of thel worm-gears18, 19, 20, and 2l to be operated, each of said gears, with theexception of the one clutched to its shaft, rotating loosely on itssupporting-hub. p

Referring to Figs. 4 and 6, it will be seen that lever68 has been thrownfrom the stopnotch '74 of quadrant 70 to the second or moderateforward-speed notch 72 of said quadrant, thereby through the connectionsdescribed rocking shaft 54 and its finger 58 to actnate lever 60 to pushback the sleeve 28 and its connected cone 25 against the stress ofspring 29 and cause the toggles 24 to expand the divided ring 28, andthus lock the worm-wheel 2O to its hub, drive the shaft 22, and impart,through pinion 51, gear 2, and compensating gears 45, 46, and 47,rotation to the shaft 43 to cause the vehicle to be driven at a moderateforward speed. As appears from Fig. 6, when the shaft 54 is rocked tothe position just described and the lever 68 is held by its pin in notchor recess 72 of the quadrant the linger 58 will be thrown to a positionat right angles to the shaft 54 and will retain lever 60 and itsconnected clutch-operating devices in the positions.

shown while the vehicle is being propelled at the speed described.Should it be desired, however, to drive the vehicle at its quickestforward speed, lever 68 will be shifted to the fast-speed notch 7l, andthis will cause shaft 54 to be further rocked in the same direction toforce finger 55 against lever 59, throw the clutch-actuating device ofshaft 40 into action, and, through the pinion 41 and gear 42, drive thetraction-wheel shaft at its highest speed. When it is desired to drivethe vehicle at its slowest forward speed, lever 68 is first shifted tothe right to the stop notch 74, which releases the quick-speed gearing,and is then moved to the left until its pin enters the slow-speed77notch 73 of quadrant 70, thereby rocking shaft 54 and causing its finger57 to force forward lever 62, and by the instruinentalities describedset the clutch in shaft 49, and through its wormwheel 19 and smallpinion 5 drive gear 42 and shaft 43 in the manner stated. If it shouldbe desired to reverse the movement of the vehicle, lever 68 is thrown tothe right until its pin enters the reversingnotch 75 of quadra-nt 70,thereby through shaft 54 and finger 57 operating the lever 61 andcausing the clutch in shaft 52 to be set, and thereby' through gear 21,in engagement with the reverse-pitch worm 14 and pinion 53, splined toshaft 52, driving the gear 42 in a direclion to propel the vehiclebackward. Should it be desired to stop the vehicle, the lever 68 isthrown to the stop-notch 74, and'in this position all ofthe clutches onthe various shafts are loose, and the worm-gears on `said shaft idlyrotate until the motor ceases to operate.

While the arrangement, sizes, and propor- IOO IIS

mw 1-T tions of gears for propelling the vehicle in a forward directionat different speeds or in a reverse direction ata low speed may bewidely varied and still be within the purview of my invention, I preferto proportion the gearing as follows: The first worm or spiral gear 13,which is nearest the motor, has a thread of double the pitch orinclination of the second or reverse-pitch worm 14 and of the third andfourth Worms 150 and 160, and thereforeimparts twice the speed of theother three to the gear 18, and through the gears 41 and 4t2 and thecompensating gear drives the traction-wheel axle at the highest velocityin a forward direction fixed upon as desirable. The fourth worm-gear 160drives worm-wheel 20, and through pinion 51, of the same diameter aspinion 41, actuates spurgear 42, and through the connections describeddrives the vehicle forward at one half the speed of the first Worm. Thethird worm-gear 150, meshing with worm-wheel 19, drives the shaft t9 andits small pinion 5, and the latter, through gear 42 and the otherconnections set forth, drives the vehicle at one-fourth the speed of thefirst worm-gear 13, and the second Worm 14, of reverse pitch, engagingwith worm gear 21 of shaft 52, through pinion 53, of the same size aspinion 5 on said shaft,and the intermediate gearing connecting saidpinion with axle 43, propels the vehicle in a reverse direction atonefourth the speed of said first worm 13. It will therefore be seenthat by this combination of four worms of the same diameter, fourwormgears of the same diameter, and four pinions, two of which are ofone diameter and the other two of half that diameter, I am enabled todrive the vehicle at three different speeds in a forward direction andat its slowest speed in a reverse direction, and of these speeds the twoslower are in opposite directions, one of them driving the machineforward and the other backward, and the two quicker are in a forwarddirection, the machine being capable of being driven forward either atdouble the slowest rate of speed or at four times the slowest velocitywith the gearing proportioned as described.

Many changes may be made in the form, proportions, and location of thevarious parts, and any suitable clutch mechanism and steering-gear maybe substituted for the construction shown, without departing from myinvention. f'

No claimis made to the clutch mechanism shown and described, for itconstitutes the subject-matter of my application filed February 21,1900, Serial No. 6,008.

Having described my invention, I claim- 1. A motor-Vehicle comprising amotor; a set of spiral driving-gears actuated by said motor; a set ofspiral driven gears in mesh with said spiral driving-gears; shafts uponwhich the spiral driven gears are loosely mounted; clutches for lockingany desired spiral driven gear to its shaft; means for actuating saidclutches; and gearing for con# necting the spiral driven gears with anaxle of the vehicle.

2. In a motor-vehicle, the combination, with a motor, of a shaft drivenby said motor and carrying a series of spiral gears; a series of shafts;a series of loosely mounted spiral gears carried by said shafts; aseries of devices for locking the loosely-mounted gears individually totheir shafts; an axle; and gearing connecting said axle with saidshafts.

3. In a motor-vehicle, the combination,with a motor, of a shaft drivenby said motor; a series of spiral gears located at intervals on saidshaft, some of said gears having threads of different inclination fromthe others; a series of shafts; a series of loosely-mounted spiral gearscarried by said shafts; a series of clutches for locking theloosely-mounted spiral gears individually to their shafts; an axle; andgearing connecting said axle and said shafts.

4. In a motor-vehicle, the combination,with a motor, of a shaft driventhereby; a series of spiral gears located at intervals on said shaft; aseries of shafts; a series of spiral gears loosely mounted on saidshafts; a series of clutches for connecting at will the spiral gears totheir shafts; gearing for connecting said shafts and an axle of thevehicle; a series of levers for operating the clutches; and means foractuating said levers.

5. A motor-vehicle comprising a motor; a traction-wheel axle; spiralgears for driving said axle at different speeds; a series of shafts;spiral gears loosely mounted on said shafts; a series of clutches forconnecting the looselymounted gears with their shafts; a series ofpivoted levers for actuating the clutches; and means for operating thelevers.

6. The combination, with a shaft carrying spiral gears one of which isof reverse pitch to that of the other,`of a motor for driving saidshaft; a series of spiral gearsintermeshed with the gears of saidmotor-driven shaft; shafts on which said spiral gears are looselymounted; means for coupling at will any of said spiral gears to itsshaft; pinions carried by each of said shafts; a driving-axle; andgearing mounted on said axle and in engage ment with said pinions.

7. The combination, with a motor, of a shaft having spiral gears drivenby said motor; shafts having loosely-mounted spiral gears located at oneside of the motor-shaft; shafts having loosely-mounted spiral gearslocated at the otherside of said motor-shaft; clutches in all of saidshafts; means for actuating said clutches to connect the loosely-mountedspiral gear desired to its shaft; a driving-axle; and gearing foroperating said axle and in engagement With the pinions'carried by theshafts.

8. In a motor-vehicle, the combination, with a series of spiral gearsgeared to the drivingaxle of said vehicle, of a series of clutchesconnecting said gears with their shafts, and means for actuating saidclutches, the con- IOO IIO

struction being such that but one clutch can be actuated at a time.

9. The combination, With a driving-shaft having'a series of spiral gearslocated at intervals thereon, of a series of` shafts; a series oflooselymounted spiral `gears carried by said shafts; a series ofclutches; gearing` connecting said spiral gears With an axle; a seriesof pivoted levers for actuating said clutches; a shaft having fingersfor operating said levers; and means for actuating said shaft..

10. The combination, with a driving-shaft having a series of spiralgears one being` of reverse pitch to that of another, of a series ofloosely-mounted spiral gears constantly in engagement With the spiralgears of the driving-shaft; a series of shafts by which the looselymounted spiral gears are carried; means for locking at Will anyv of saidgears to its shaft; a series of pinions, one secured to cach shaft; anaxle; and gearing for driving said axle and in engagement with thepinions of said shafts.

11. The combination, with an axle, of gearing carried by said axle; amotor; a shaft driven by the motor and carrying a series' of spiralgears; a series of shafts some located on one side and others on theopposite side of the motor-driven shaft; a series of spiral gearsloosely mounted ou said shafts clutches for connecting at will any ofsaid spiral gears to its shaft; levers for actuating said clutches; ashaft vhaving fingers so disposed thereon that but one clutch-actuatinglever can be operated at a time; and means for actuating said shaft.

12. The combination, With a series of clutches, of means for actuatingsaid clutches, and a shaft having a series of fingers disposed atdifferent angles to its axis for operating the clutch-actuating means,some of said fingers being yielding in one direction and rigid in theother direction.

13. The combination, with a series of clutches, of pivoted levers foractuating said clutches, and a shaft having a series of iingers disposedat different angles to its axis for operating said levers, some of saidfingers being yielding in one direction and rigid in the otherdirection.

14. The combination,witha series of shafts, of gears loosely mounted onsaid shafts; clutches for coupling said gearsto their shafts; a shafthaving a series of fingers, some of which are yielding in one directionand rigid inthe other; and means for actuating said shaft.

l5. The combination,with a series of shafts, of gears loosely mounted onsaid shafts; clutches for couplingsaid gears totheir shafts; pinionsfixed to said shafts; an axle; gearing driven by said pinions; means foractuating the clutches; and a shaft having a series of fingers disposedat different angles to its axis for operating the clutch-actuatingmeans.

1G. The co1nbination,With a series of shafts,

of gears loosely mounted on said shafts; cl utches for coupling saidgears i'othci rsha'fts; a series of pinions some of which are ofdifferent diameter from others, secured to said shafts; means foractuating said clutches; a shaft having a series of fingers disposed atdifferent angles to its axis for operating the clutch-actuating means;and a lever and connections for actuating said shaft.

17. rlhe combination, with a motor, of a shaft driven thereby andcarrying a series of spiral gears one of which has a thread of great-erinclination than the threads of the others; a series ofshafts; spiralgears loosely mounted on said shafts and meshing with the spiral gearson the motor-driven shaft; friction-clutches for locking any of saidgears to its shaft when desired; pinions splined to said shafts; pivotedlevers for actuating said clutches; a shaft carrying a series offingers, each disposed at a different angle to its axis, for operatingthe clutch-actuating levers; rack-and-pinion mechanism for actuatingsaid finger-carrying shaft; and gearing connecting the pinions on theshafts with the drivingaxle of a vehicle.

18. The combination, with a motor, of a shaft having a quick-speed Wormor spiral gear and a series of slovverspeed worms or spiral gearsloc-ated at intervals thereon; spiral gears 0r Worm-wheels in mesh withthe Worms on the motor-driven shaft; a series of shafts to which saidspiral gears or Worm- Wheels are loosely connected; clutches for lockingsaid gears to their shafts; means for actuating the clutches; andgearing connecting said shafts with the drivingsaxle of a vehicle.

19. The combination,\vith an axle,of a train of gearing for driving saidaxle at different speeds; a series of clutches for coupling certainelements of said train to their shafts; means for separately actuatingsaid clutches; a shaft carrying a series of fingers disposed at variousangles thereto; and means for operating said shaft.

20. The combination, with the driving-axle of a vehicle, of a motor; atrain of gearing actuated by the motor and constructed to d rive saidaxle at different speeds; a series of clutches for coupling certainelements of said train to their shafts; means foractuating said clutcheseach at a different time; a shaft carrying a series of fingers disposedat various angles to its axis; and means for actuating said shaft to setthe desired clutch.

21. The combination, With the sectional driving-axle of a vehicle, ofcompensating gearing connected to said axle; a series of shafts carryingpinions each in mesh with a gear carried by said driving-axle; a seriesof loosely-mounted spiral gears; toggles located in the hubs of saidgears; a divided ring actuated by each of said toggles and adapted whenexpanded to clutch a spiral gear to its hub; means for actuating thetoggles; and means for driving the spiral gears.

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22. In a motor-vehicle, the combination, with a motor, of a shaftdrivenby said motor; a series of spiral gears located at intervals on saidshaft; a series of hollow shafts located above and below themotor-shaft; a series of spiral gears loosely mounted on hubs secured tosaid shafts; a series of toggles; a series o'f eXpansihle rings locatedbetween the spiral Agears and their hubs; a sleeve carrying a conemounted in each of said shafts; pivoted levers for actuating saidsleeves; a shaft having ngers disposed at various angles to its axis; apinion on said shaft; a rack in engagement with said pinion; and a leverconnected to said rack.

23. In a motor-vehicle, the combination,- With a motor, of a shaftcarrying a quickspeed spiral gear; two slow-speed spiral gears; aslow-speed spiral gear of reverse pitch from that of the other gears; aseries of shafts journaled in the framework of the vehicle; a series ofspiral gears constantly in mesh with the spi ral gears of themotor-shaft and loosely mounted on their shafts; means for clutchingsaid spiral gears one at a time to their shaft-s; a series of pinionscarried by the shafts; and gearing connecting said pinions with thedriving-axle of the vehicle.

24. In a motor-Vehicle, the combination, with the driving-axle thereof,of gearing connected to said axle; a series of shafts carrying pinionsintermeshed Wit-h said gearing; a series of spiralv gears looselymounted on said shafts; a series of clutches for coupling any one ofsaid spiral gears to its shaft; a rock-shaft carrying a series oflingers disposed at various angles to its axis means for actuating saidrock-shaft; and a lever under control of the operator, for operating therockshaft-actuating means.

HORACE L. ARNOLD.

/Vitnesses:

WM. H. BLODGETT, C. S. WEED.

